Device for producing staple fiber yarns from continuous filaments



J. E. HALIN Oct. 28, 1941.

DEVICE FOR PRODUCING STAPLE FIBER Y ARNS FROM CONTINUOUS FILAMENTS FiledApril 12, 1940 IF E HAIJN INVENTOR ATTORNEYS ing and spinning.

Patented a. 2a, 1941 DEVICE FOR PRODUCING STAPLE FIBE YARNS FROMCONTINUOUS FILAMENTS ules E. Halin, Drummondville,

assignor to Celanese Corporation of corporation of Delaware Quebec,Canada, America, a

Application April 12, 1940, Serial No. 329,226

, 5 Claims.

This invention relates to the manufacture of textile yarns, and relatesmore particularly to a device for producing yarns having the appearanceofspun yarn, 1. e1 yarn made from staple fiber, but having a basis ofcontinuous filaments.

In the manufacture of spun yarn from artifical fibers, the usualpractice is to cut continuous artificial filaments or waste filamentsinto, comparatively short lengths, for example of 1 to 2 inches or more,and then subject the staple fibers produced to a series of operationsappropriate to the length of the fiber, such operations being similar tothose accorded to natural fibers such as cotton or wool, includingopening, carding, draw- These operations represent in the production ofsuch a relatively slow transconsiderable expense yarns, since theyinvolve formation of the initial fibrous material to a finished yarn.

It is an object of this invention to provide an improved device forproducing yarn having an appearance similar to that'of yarn made fromspun fiber without the necessity for cutting continuous filaments intoshort lengths and spinning the fibers thus produced, which device issimple in. construction, inexpensive in cost and effective in operation.

.Another object of this inventionis the provision of means forcontrolling the shape of the balloon formed by the yarn drawn from thesupply package whereby the degree of abrasion of the yarn may beregulated and uniform results secured under all conditions unwinding ofthe yarn from the yarn supply package.

A further object of this invention is to provide in an up-twist twistingmachine relatively adjustable abrasive means and yarn guides.

Other objects of this invention, together with certain details ofconstruction and combinations of parts, will appear fromthe followingdetailed description and the claims.

In accordance with the instant invention an up-twist twisting machine,comprising the usual twisting spindle, yarn supply package or bobbin,pig-tail guide, cork roller and takeup package or bobbin, isprovidedwith an abrasive element and additional guide means for cutting thefilaments of the yarn by abrasive action so that at any one point onlyone or relatively few of the filaments obtaining during the in. the yarnare broken, or at least some of the The instant invention'will now bedescribed in greater detail with reference to the accompanying drawingwherein Figure 1 is a front elevational view of an uptwisting devicemodified in accordance with the meral 4 indicates a. cross bar on theframe of an up-twisting machine in which the yarn 5, comprising a bundleof continuous filaments havin the required twist therein, is taken froma twisting bobbin 6 mounted for rotation on a spindle assemblycomprising a spindle I mounted on a whorl 8 adapted to be rotated by abelt (not shown) as is well understood in the art.

In normal up-twisting practice, the yarn 5 is taken from rotating bobbin6, passed through a pig-tail guide 9 suitably attached to the cross bar4, then through yarn guide I I, which may be made of porcelain or of anyother suitable material, attached to reciprocating traverse bar l2 bymeans of wires l3 and screws II, and finally wound on to a take-upbobbin l5 resting on and rotated by a cork covered roller I6 fixed toand driven by a. shaft 11.

In accordance with this invention, the uptwisting machine is modified byadding thereto simple and inexpensive means for efliciency andexpeditiously converting a yarn of continuous filaments into a yarnhaving the appearance of spun yarn. This means comprises a circular discl8 of emery or carborundum having aperture H of small radius in thecenter thereof, a pig-tal guide 2| and a ring guide 22, all disposedbetween thetake-up means and yarn package.

The abrasive disc is mounted in asuitablewireas by nuts 28, to the crossbar I. The holders are held against movement by set screws 29 whichcooperate with a vertical groove 3| in the rod 21 to prevent rotation ofsaid holders about the rod 21. Theholders 2|, 25 and 26 havelongitudinal openings therein for receiving the twisted ends of wireholder 23, the end of pig-tail guide 2| and of ring guide 22 and by thisconstruction the abrasive disc, pig-tail guide and ring guide may duringthe course of the unwinding of the yarn from a full bobbin to an emptyone, conditions that would otherwise vary the shape and size of theballoon and would result in a variable abradring action.

The operation of my device is as follows Yarn supplied by bobbin 6,having a denier of 200, has

a twist of 15 to 20 turns per inch or other suitable twist insertedtherein by the rotation of said bobbin 6. The yarn from the bobbin ispassed through ring guide 22, pig-tail guide 2| and aperture I9, whichis to M of an inch in di-' ameter, and then through pig-tail guide 9,porcelain guide II and on to take-up bobbin I5, the abrasive disc l8,the pig-tail guide 2| and the ring guide 22 being suitably adjustedrelative to each otherand tothe yarn being operated upon,

so as to effect the desired degree of abrasion on the yarn. The rotationof the bobbin 6" causes the yarn to balloonpwhich ballon is controlledby means of pig-tail guide 2| and ring guide 22 so as to produce thedesired contact of the yarn with the 'abrasive disc Is. This contact ofthe yarn with the abrasive disc I 8, .by virtue of the ballooningthereofand the control of said ballooning, and the drawing of the yarn by thetakeup bobbin |5 effects the abrasion of the yarn to the degree desired.

It is to be understood that the foregoing detailed description anddrawing are given merely by way of illustration and that many variationsmay be made therein without departing from the spirit of my invention. vHaving described my invention, what I desire to secure by Letters Patentis:

'1. A paratus for the conversion of a yarn comprising a bundle ofcontinuous filaments into a continuous product containing staple fibercomprising, in combination with a device having means for ballooningsaid yarn and inserting a twist therein and means-for taking-up the sameat a point above the-twisting means, an abrasive member adapted to becontacted by said yarn continuously during the ballooning of said yarn,

and a plurality of guides disposed below said abrasive member forregulating'the ballooning of prising, in combination with a devicehaving means for ballooning said yarn and inserting a twist therein andmeans for taking-up the same at a point above the twisting means, anabrasive 'member adapted to be contacted by said yarn continuouslyduring the ballooning of said yarn, and a plurality of guides disposedbelow said abrasive member and adjustable relative thereto forregulating the ballooning of said yarn so as to control the degree ofabrasion of said yarn by said abrasive member. I

3. Apparatus for the conversion of a yarn comprising a bundle ofcontinuous filaments into a continuous product containing staple fibercomprising, in combination with an up-twisting device having means forballooning said yarn and inserting a twist therein and means fortaking-up the same at a point above said twisting means, a rod attachedto said up-twisting device, an abrasive member adapted to be contactedby said yarn and a plurality of guides for regulating the ballooning ofsaid yarn so as to control: the degree of abrasion of said yarn by saidabrasive member, the construction and arrangement being such that saidabrasive member and said guides are v mounted for vertical adjustment onsaid rod.

said yarn so as to control the degree of abrasion of said yarn by saidabrasive member;

2. Apparatus for the conversion of a yarn comprising a bundle ofcontinuous filaments into a" continuous product containing staple fibercom- (Apparatus for the conversion of a yarn comprising a bundle ofcontinuous filaments into a continuous product containing staple fibercom- V prising, in combination with an up-twisting device having meansfor ballooning said yarn'and inserting a twist therein andmeans fortakingup the same at a point above said twisting means, a rod attachedto said up-twisting device, holders mounted for verticalmovement on saidrod, an abrasive member and a plurality of guides carried-by saidholders, the construction and arrangement being such that the abrasivemember prising, incombination with an up-twisting dvice having means:for ballooning said yarn' and inserting a twist therein and means fortakingup the same at a point above said twisting means, a rod attachedto said up-twisting device, holders mounted for vertical movement onsaid rod, an abrasive member and a plurality of guides adjustablycarried by. said holders, the construction and arrangement being suchthat the abrasive member is adapted to be contacted by said" yarn andthe guide means are adapted to re'gulate the ballooning of said yarn soas to control the degree of abrasion of said yarn by said abrasivemember.

JULES E. HALIN.

